Overview

overview

10

Static

static

3

8F93AA8AA0...4B.exe

windows10-2004-x64

10

8F93AA8AA0...4B.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    8F93AA8AA04CA6C13477542655CDB74B.exe
  • Size 4.2MB
  • Sample260730-2prlnagm9y
  • SHA256 58b16700b8a3b8f0db2fb2e14b8c3e835270111518e67239b373a81ffd265b9a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasiondiscoveryexecutioninstallerpersistence

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 156.247.40.131:4452

  • 156.247.40.131:4453

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 7.21

Targets

    • Target
      8F93AA8AA04CA6C13477542655CDB74B.exe
    • Size 4.2MB
    • SHA256 58b16700b8a3b8f0db2fb2e14b8c3e835270111518e67239b373a81ffd265b9a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordefense_evasiondiscoveryexecutionvalleyrat_s2installerpersistence

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

      defense_evasion

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

2
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

2
T1016

Internet Connection Discovery

2
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks